Messa a fuoco selettiva di scienziato afroamericano in occhiali utilizzando il microscopio con luce solare su sfondo - Filmati e video stock

Selective focus of female scientist in white coat looking through microscope in laboratory

Close up view of african american scientist in glasses using microscope with backlit

KAZAN, TATARSTAN/RUSSIA - AUGUST 22 2017: Man in grey Tatneft coat pours crude oil into small bulb and looks at black liquid with happy smile on August 22 in Kazan

4K Extreme close up of medical researcher in the lab looking into microscope

KAZAN, TATARSTAN/RUSSIA - AUGUST 22 2017: Closeup happy man lab assistant in protective glasses looks at bulb with black raw oil in modern test laboratory on August 22 in Kazan

Doctor put gel on ulstrasound equipment. Mature patient at blurred background. Procedure of ultrasonography scanning.

Close up view of african american scientist in glasses using microscope with backlit

Close up view of african american scientist in glasses using microscope

Selective focus of african american scientist in glasses looking at blood sample in flask

Portrait of smiling african american doctor in glasses looking at camera

Cropped view of scientist taking blood sample on glass

African american scientist in glasses using microscope and then looking at camera